Machine for treating rubber and other heavy plastic materials



F. H. BANBURY.

MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIALS.

APPLICATION FILED SEPT. 4, I920.

1,370,398, Patented Mar. 1, 1921.

3 SHEETSSHEET I- F. H' BANBURY. MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIALS.

APPLICATION FILED SEPT. 4, 1920.

3 SHEETS-SHEET 2- Batented Mar. 1, 1921.

F. H. BAN BURY. MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIALS. APPLICATION FILED SEPT. 4, I920.

1,370,398, Patented Mar. 1, 1921.

3 SHEETSSHEET 3.

a subject of the UNITED *STATES PATENT OFFICE.

FERNLEY H. BANBUBY; OF ANSONIA,.CONNECTICUT, ASSIGNOR TO BIRMINGHAM IRON FOUNDRY, 0F DERBY, CONNECTICUT, A. CORPORATION.

' MACHINE FOR TREATING RII'BBER AND OTHER- HEAVY PLASTIC MATERIALS.

' Specification of Letters Patent.

Patented Mar. 1, 1921.

Applicatibn filed September 4, 1920. Serial No. 408,329.

, To all whom it may concern Be it known that I FERNLEY H. BANBURY; ing of- Great Britain, residing at Ansonia, in the county of New Haven and State of Connecticut, have invented new and useful Improvements, in Machines for Treatin v Heavy Plastic Materia s; and I dohereby declare the following, when taken in connection with the accom anying drawin s, and the characters of re erence marked t ereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in-

Figure 1 ,.a broken vertical sectional view illustrating a machinefor treating rubber and other plastic material, provided with a weight embodying this invention.

Fig. 2, a top or plan view of the weight.

Fig. 3, a side view of the same.

Fig. 4, a sectional view on the line 4-4 of Fig. 2. 1 1

Fig. 5, a top-:or plan --view of a modified form of weight.

Fig. 6, a side view-of the same.

Fig. 7, a sectional viewon the line 7- 7 of Fig. 5.

This invention relates to an improvement in machines for treating rubber and other heavy plastic material, and particularly to the type of machine illustrated and described in United States: Patent No. 1,200,-'

070, October 3d, 1916, which includes a casing with rotors mounted therein, with a neck opening into the casing, and a vertically movable weight located in said neck. In treating plastic material in machines of the type herein referred to, and particularly in treating rubber, as the mass is worked by the rotors, powder is introduced from time to time as required. As the mass bein worked becomes solid, the weight is move up and down and at this time it is usually necessary to feed powder of one kind or another, according to the material being treated. I-Ieretofore, it has been necessary to provide means for raising the weight so that powder could be introduced into the casing.

I The object of this invention is toso; construct the weightthat powder oirother-ma- Rubber and other at the upper end than at the lower end,

terial ma be placed on top of the weight and by t e up-and-downmovement of the weight be fed into the casing, and the invention consists in the construction as hereinafter described .and particularly recited in the claims.

In carrying out my invention, as herein shown, I employ a casing 10 provided with a neck 11 opening into the top of the casin and rotors 12 and 13, and in the neck s a verticall movable weight l i. This weight is prefera ly formed at opposite ends with openings 15 and 16, the inner side-walls 17 and 18 of which are tapered from the "center of the top of the weight downward forming two pockets into whlch powder or other material may be placed. As the weight is moved up and down by the mass of material operated upon by the rotors, the

powderor other material supported b the 2 weight will drop into the casing, it eing understood that as a rule these powders will generally mass so as not to freely pass through the weight unless the weight is moved so as to dislodge portions of they powder at the bottoms of the openings.

, Instead of forming the openings at each end, the weight may be formed on o posite v sides with c earance channels 19 an ,20 by cutting through the bottom of the weight, the walls 21 and 22 of the channels being tapered so that the channels are larger tending to cause the material placed therein to mass so that it will not be discharged except as the weight is moved up' and down. As in the construction of the wei htv first described powder or other materia laced in the weight will mass in th channe s and as the material being'treated a d moved by the rotors becomes solid, it will force the weight up and down and jar material placed in the weight into the casing to be operated upon by the rotors.

"I claim:

.1. In a machine of the class described, the combination with a cas'ingprovided with a. neck, of a weightlocat'ed in said neck, said weight formed with; a clearance channel adapted tocontain material to be delivered through the lower end -of the weight.

2. In a machine" of the class specified, the ends with openings-the inner walls'ofwhich combination with a casin provlded with a aretaper ing. neck, of-a, vertically move 10 weight located v In testimony whereof, I have signed this in said neck, said weight formed at op site. pecification in the presence of two sub 1 5 lends wit ollfenin textellllding throng the scribing witnesses. I ottom o te sai -we ig t,

3. In a machin'eof the q1a ss'specified, the V BANBURY combination with a; casin provld'edfwith a Witnesses; neck, ,ofawverticelly mova le weight within EREDERIO C. EARLE, 10 said heck,'said"weight"formed at7opposite J. HAROLD FLINN. 

